Mitsubishi Electric L02SCPU User's Manual And Reference page 187

Backup status can be checked in SD690.
SD690 value
0
Before backup start
H
1
Backup start prepared
H
2
Backup start preparation completed
H
3
Backup in execution
H
4
Backup completed
H
FF
Backup error
H
(a) Insertion and removal of SD memory card
An SD memory card can be inserted/removed after preparation for backup is completed.
(b) Operating status of the CPU module
To backup, the CPU module must be in the STOP status. (When the CPU module is either in the RUN or
PAUSE status, it is switched to the STOP status after the END processing where a request to backup start
preparation was received.)
After replacing the CPU module, it must be powered off and then on or reset. (Failure to do so keeps the CPU
module in the STOP status even after setting the switch to the RUN position.)
Backup start setup is requested
from a programming tool or the backup
start setup contact is turned on.
Before backup start Backup start prepared
CPU operating
1
RUN/STOP*
status
/PAUSE
*1 The status includes a stop error.
Status
Backup is not started
An SD memory card can be inserted/removed
Set data to backup
Backup is in execution
Backup has been completed
Backup has failed due to an error
Backup start is requested
from a programming tool or the backup
start contact is turned on.
Backup start
preparation completed
STOP*
CHAPTER 3 CPU MODULE FUNCTIONS
Description
Backup in execution Backup completed
1
3
185